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    • 4. 发明专利
    • Method for suppressing elution of selenium
    • 用于抑制硒的剥离的方法
    • JP2013234111A
    • 2013-11-21
    • JP2013078846
    • 2013-04-04
    • Jfe Steel CorpJfeスチール株式会社
    • WATANABE KEIJIIZAWA TOMOOYAO YASUKO
    • C04B5/00C21B3/04C21C1/02F27D15/00
    • Y02W30/542
    • PROBLEM TO BE SOLVED: To provide a method for suppressing elution of selenium from steel slag containing sulfur and selenium.SOLUTION: A method for suppressing elution of selenium from steel slag includes a selenium elution suppression step in which steel slag containing sulfur and selenium is brought into contact with oxidizing gas in the presence of water, and the mass ratio Rs of thiosulphate ion state sulfur eluting from the steel slag to the whole sulfur is controlled so as to satisfy following formula: Rs=(S/S)×100≥51.5 (mass%) [in the formula, Sis an elution amount (mg/L) of thiosulphate ion (SO) state sulfur from the steel slag, and Sis an elution amount (mg/L) of the total sulfur (T-S) from the steel slag].
    • 要解决的问题:提供一种抑制含有硫和硒的钢渣的硒的洗脱的方法。溶液:用于抑制来自钢渣的硒的洗脱的方法包括硒洗脱抑制步骤,其中带有含硫和硒的钢渣 在水的存在下与氧化气体接触,并且控制从钢渣到整个硫洗脱的硫代硫酸根离子态硫的质量比Rs,以满足下式:Rs =(S / S)×100≥51.5 (质量%)[式中,Sis来自钢渣的硫代硫酸根离子(SO)状态的硫的洗脱量(mg / L),Sis来自该硫化物的总硫(TS)的洗脱量(mg / L) 钢渣]。
    • 8. 发明专利
    • Method of reusing wet dust present in material generated in blast furnace
    • 在BLAST FURNACE中产生的材料中存在污染物的方法
    • JP2013023720A
    • 2013-02-04
    • JP2011158095
    • 2011-07-19
    • Hamada Heavy Industries Ltd濱田重工株式会社Nippon Steel & Sumitomo Metal Corp新日鐵住金株式会社
    • SHIMOMURA KENSUKEKAMIKAWA YOSHIHIROODA HIROSHIHIROMATSU TAKASHI
    • C22B1/00B03B5/28B03C1/00C21B3/04C22B7/02C22B19/30
    • Y02P10/212Y02W30/542
    • PROBLEM TO BE SOLVED: To provide a simple, practical, and effective method of reusing wet dust present in a material generated in a blast furnace, for effectively using wet dust collected from exhaust gas of an iron-making blast furnace, which method comprises separating the wet dust into three portions, i.e., a portion comprising iron (Fe) as a useful object, a portion comprising carbon (C) as a useful object, and a portion comprising zinc (Zn) as a useful object.SOLUTION: The wet dust is converted into a slurry state, and the resulting slurry is subjected to two steps 15, 16 of wet cyclone separation, and the effluent from the lower part of the second step cyclone is subjected to wet magnetic separation 17, whereby the wet dust is separated into three portions, i.e., a portion comprising iron (Fe) as a useful object, a portion comprising carbon (C) as a useful object, and a portion comprising zinc (Zn) as a useful object.
    • 要解决的问题:为了提供一种简单,实用和有效的方法来重复使用在高炉中产生的材料中存在的湿粉尘,以有效地利用从炼铁高炉废气中收集的湿粉尘, 方法包括将湿灰分为三部分,即包含作为有用目的的铁(Fe)的部分,包含作为有用目的的碳(C)的部分和包含锌(Zn)作为有用目的的部分。

      解决方案:将湿粉尘转化为浆液状态,并将所得浆料进行湿式旋风分离器的两个步骤15,16,并将来自第二步骤旋风分离器下部的流出物进行湿式磁力分离 如图17所示,由此将湿尘分离成三部分,即包含作为有用目的的铁(Fe)的部分,包含作为有用目的的碳(C)的部分和包含锌(Zn)作为有用物体的部分 。 版权所有(C)2013,JPO&INPIT